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Why motor rheostat kept minimum position generator rheostat maximum position?

the back emf increases so that high currents doesn't pass through the field windings


When the rheostat position is changed from minimum position to maximum position in motors what will happens?

the back emf increases so that high currents doesn't pass through the field windings


Why field rheostat of dc shunt motor kept in minimum position?

it is kept at minimum position to produce more torque which is required for starting a motor


How do you Test a rheostat?

how to test a rheostat?


Why is the field rheostat of a DC motor kept at minimum position while starting?

If you are talking about the field rheostat on a generator, once you have the correct voltage output set, it is very unlikely that it has to be touched again. If it is the generator's first start up, then it is best to set the field on the low side so as not to over excite the generator and drive the output voltage higher that what the generator's specifications are rated at. The field excitation voltage does not have to be set at the minimum position on every start up once it is set for the correct output voltage. A good example of this is a hospital standby generator, it starts up with no human intervention needed.


What is another name for a rheostat?

A variable resistor is another name for a rheostat.


What will happen if field rheostat of dc shunt motor is kept at maximum position while starting?

First remember this rheostat is connected in series with the armature to increase the total resistance to limit the starting current, thus achieving max starting torque from the motor


Where does lost energy in a rheostat go?

It is lost in heating the resistive material of the rheostat.


What is the hypothesis of a rheostat?

The hypothesis of a rheostat is that by changing the resistance in a circuit using the rheostat, the current flowing through the circuit can be varied, thus regulating the output of the circuit.


What is the advantage of keeping the prism in minimum deviation position?

By keeping the prism in minimum deviation position, the RI of the prism can be calculated efficiently.


How do you install a rheostat in 1999 626 Mazda?

How do you install a rheostat in 1999 626 Mazda?


How do you take out the light rheostat on a 95 Monte Carlo?

How do you take a rheostat out of a 2003 monte carlo